Enbridge Pipelines, Inc.(Enbridge) is a main supplier of liquid hydrocarbon from western and eastern Canada, and to the midwest in the US. The underground pipeline system transports approximately 7,400 km of pipe and approximately 280,000 m3 of liquefied natural gas daily, including purified products. Enbridge chose the DGNSS system as a method for maintaining and managing the extensive pipe. Enbridge used DGNSS receivers to measure the locations of the timer box and ground control stations. Such method created reference data for the inline inspection (INI) tool. Before using DGNSS, they manually calculated the location of defects. This method involved measuring and using the distance between some objects inside the pipeline such as valve and ILI tools in order to calculate the rough location on the ground. Investigating the location of defects using this method is inaccurate, reliant on the subjective opinions of the worker, and costly.

However, Enbridge can now identify the precise location of the underground pipeline and map the location of defects. This means that when the ILI tool reports defects, it is possible for just one worker to easily find that location and mark the location for the drilling worker.